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6 Possible Causes for Hyperactive Startle Reflex

  • Stiff-Person Syndrome

    Stiff Man Syndrome is a neuromuscular condition in which a hyperactive startle reflex results in the contraction of the muscles, thus causing violent spasms.[diagnose-me.com] Stiff Man Syndrome is a neuromuscular condition in which a hyperactive startle reflex results in the contraction of the muscles, thus causing violent spasms .[diagnose-me.com]

  • SIDDT Syndrome

    All affected infants have a hyperactive startle reflex that can be provoked by loud noise, bright light, movement, or tactile stimulation (e.g., bathing).[pnas.org]

  • Hereditary Hyperekplexia

    Patients may also have umbilical and inguinal hernias and hyperactive brainstem reflexes such as head retraction, palmomental and snout reflexes.[cags.org.ae] While hypertonia diminishes after the first year of life, patients suffer from startle-induced falls or nocturnal myoclonic muscle jerks.[cags.org.ae]

  • Paramyoclonus Multiplex

    […] long latency reflex due to dys-inhibition of certain brainstem center  May be stimulus sensitive myoclonic disorder 23.[slideshare.net] STARTLE EPILEPSY  Non habituating startle tonic extensor spasm epilepsy  EEG – Desynchornization frank epileptiform discharge bilaterally symmetrical or even focal  Jumping[slideshare.net] […] normal latency  EEG –  Abrupt onset of spike and slow wave complex maximum from centrally background dysynchronization normal  SSEP –  significant increased amplitude  Hyperactive[slideshare.net]

  • Hyperekplexia - Epilepsy Syndrome

    All rights reserved SSDI 0387-7604(94)00113-8 muscular hypertonia and hyperactive tendon reflexes.[kundoc.com] Most patients (64 out of 66 cases with the nose-tapping test) exhibited a hyperactive brainstem reflex, which was found with the nose-tapping test.[e-jmd.org] The abnormal startle response can be easily elicited by tapping the infant's nose.[kundoc.com]

  • Spastic Paraplegia - Precocious Puberty Syndrome

    […] response Optic disc pallor Sensory neuropathy Hyperhidrosis Kyphosis Optic atrophy Hyperactive patellar reflex Flexion contracture of finger Poor fine motor coordination[mendelian.co] Dysdiadochokinesis Bradykinesia Spastic tetraplegia Abnormality of the nervous system Sensorineural hearing impairment Gait ataxia Nystagmus Hyperreflexia proximally Exaggerated startle[mendelian.co]

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